Stems long-creeping, branched, 1--2.5 mm diam.; scales lanceolate-attenuate, centrally clathrate with cell luminae clear, glabrescent or with scattered reddish brown hairs. Leaves to 10 cm, weakly hygroscopic. Petiole round in cross section, sparsely scaly; scales rarely overlapping, margins fringed-ciliate. Blade ovate-lanceolate to oblanceolate, simple, 0.5--2 cm wide, margins entire, densely scaly abaxially, sparsely scaly adaxially; scales bicolored, broadly ovate-lanceolate, 0.5--1 mm wide, centers brown, clathrate, margins transparent, irregularly fringed-ciliate. Venation complexly anastomosing, fertile areoles with several included veinlets. Sori round to oval, discrete, surficial to shallowly embossed, soral scales attached to receptacle. Spores smooth with scattered spheric deposits, ca. 59 µm.
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